[jhb_airlines] Re: F100 performance

  • From: gwinsk@xxxxxxx
  • To: jhb_airlines@xxxxxxxxxxxxx
  • Date: Fri, 24 Dec 2004 15:56:25 -0000

Without increasing the thrust scalar, my climb, at max allowable AUW, didn't 
run out of 
puff as badly as yours. I altered the Autopilot Autothrottle_Max_rpm from 98 to 
108. That 
was advised for most jets, I think in the Flightsimvets Forum.

Gerry Winskill

On 24 Dec 2004 at 15:34, Bones wrote:

> Just a quickie before I have to nip out.
> The F100 has an empty weight of 60631lb. In the notes it says the MZFW
> = is 79000lb so this means your maximum payload (pax and cargo) is
> limited to 18369lb. It's dead easy to exceed this as it is in real
> life but that's = your base figure for passenger loading.
> Assuming you hit this figure you are only going to have another
> 165000lb = for fuel. In other words never expect to fill the tanks
> full unless you have = got a really low pax load. About 80% is the
> maximum you will achieve. Again = this is like real life - aircraft
> hardly ever fly with full fuel load now. Obviously it's better to fly
> with minimum fuel load to increase = performance and decrease costs
> (what is the point of lugging a huge weight of fuel uphill only to
> bring it down again).
> With the F100 loaded up to max I took off and set her in a climb at =
> 1800fpm. At FL100 I increased speed from 250kts to 280kts as per the
> handbook but = she was running out of puff at FL150. At FL150 I
> dropped ROC to 1500fpm. At FL200 I dropped it again to 1000fpm and at
> FL250 down further to 800fpm. = At FL270 I reduced it to 500fpm and
> the aircraft held 280kts and 500fpm up = to FL310. I didn't try for
> the operational ceiling of FL350 but I'd guess = you would have to
> reduced climb rate even further.
> During all this time N2 stayed at 97.9.
> HC@xxxxxxxxxx
> http://fsaviation.net

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